Coil mounting clip



March 1953 w. H. CHURCHILL 2,632,615

I COIL MOUNTING CLIP Filed June 25, 1949 iNvENToR'.

ATTORNEY.

WILMER H. CHuRcH LL,

Patented Mar. 24, 1953 COIL MOUNTING CLIP Wilmer H. Churchill,Wellesley, Mass., assignor to United-Carr Fastener Corporation,Cambridge, Mass., a corporation of Massachusetts Application June 25,1949, Serial No. 101,307

The invention relates to a snap-in clip for mounting a cylindrical partto a support and more particularly to a snap-in clip for mounting acylindrical radio coil form' having a coaxial core-adjusting screw on asheet metal support.

The oscillator coil for television sets comprises an elongatedcylindrical core member having a predetermined number of windings and anaxially movable core therein adjustable longitudinally of the coil.Satisfactory operation of the device requires that the core beaccurately positioned in the coil and this has'been accomplished by theuse of an adjusting screw rotatable in and extending coaxially from oneend of the coil. This arrangement, however, has not proven v entirelysatisfactory since the adjusting screw tends to creep or turn in itssupport due to vibration or other causes and thus varies the position ofthe core in the coil with consequent adverse effects on operation.

is the provision of a simple and efficient snap-- in clip for mounting acoil form in a support wherein improved means are provided fortensioning the adjusting screw against accidental turning.

Another object of the invention is the provision of an improved snap-inclip for mounting a coil form in a support wherein the coil form ispositively gripped to prevent accidental displacement or turningthereof.

These and other objects and advantages of the invention will be apparentto persons skilled in the art from a consideration of the attacheddrawings and annexed specification illustrating and describing apreferred embodiment of the invention.

In the drawings:

Fig. 1 is a side elevational view of the improved snap-in clip of thepresent invention as viewed from the bottom in Fig. 2;

Fig. 2 is a top plan view of the clip;

Fig. 3 is a bottom view of the clip;

Fig. 4 is a side elevational view of the clip as viewed from the left inFig. 2;

Fig. 5 is a partial sectional view of the clip as- 2 Claims. (Cl.248'2'7) 2 r sembled with an oscillator coil and mounted in a panel; andFig. 6 is a sectional view of a portion of the assembly shown in Fig. 5taken at right angles to the view of Fig. 5 i

Referring now to the drawing the snap-in clip of the present inventioncomprises a generally U-shaped member Ill which may desirably be pressedout from a shaped blank of resilient sheet metal such as spring steel.The bottom. I I- of the U-shaped member Ill constitutes the base of thedevice and is provided with a threaded opening or helix l2 to receivethe threaded adjusting screw l3 of a coil l4. The part to be supported,such asthe coil I, may be of a type frequently used as an oscillatorcoil of a television set and in general co nprises a sleeve I 5 having awinding l6 thereon connected to suitable terminals (not shown) and acore ll longitudinally adjustable in the sleeve l5 by the adjustingscrew 13. The adjusting screw I3 may have a slot l8 in the end thereoffor-engagement by a suitable tool such as a screw driver or the like. 7j

Extending upwardly from the base I l of the U-shaped member [0 are apair of oppositely positioned arms I9 and 20 which carry at their upperends wing portions 2i and 22. The wing portions 2| and 22 extendlaterally outwardly from the arms l9 and 20 preferably at an acute anglethereto so as to tension the device when positioned in a support 23. Oneof thewing portions is provided with a small tongue 24 turned downwardlytherefrom adjacent the end thereof and adapted to engage an opening 25in the support to prevent rotation of the device.

In accordance with the present invention the arms [9 and 20 are formedwith upper relatively wide supported part or coil-engaging portions 26and 21 and lower screw-engaging portions 28 and 29. The coil-engagingportions 26 and 21 are shaped to snugly engage the lower surfaceportions of the coil [4 and for this purpose are preferably curved onarcs of a circle having a diameter substantially equal to the diameterof the coil. By virtue of the inherent resiliency of the arms l9 and 20the portions 26 and 21 firmly grip the coil to prevent turning oraccidental dislodgment thereof from the clip. Additional means forpreventing turning or dislodgment of the coil are provided in the formof pointed projections 30 and 3! which extend outwardly and downwardlyfrom the opposite edges of each of the portions 26 and 21 and are turnedinwardly slightly at their pointed ends so as to bite into the sleeve 15of the coil. This arrangement plus the inherent gripping power of theportions 26 and 21 insures that the coil will not turn in or heaccidentally displaced from the clip.

The portions 28 and 29 of the arms l9 and 29 represent an importantfeature of this invention in that they subject the adjusting screw .!3to tension friction to prevent accidental turning thereof from apredetermined adjusted position. This is accomplished by reverselybending the portions 28 and 29 so that the curved portions '32 and 33thereof yieldingly engage opposite sides of the adjusting screw. Thegripping action thus exerted by the curved portions 32 and 33 createssuflicient frictional resistance to prevent accidental turning of theadjustingscrew but permits ready adjustment thereof by a suitable tool.

The base portion l I also carries the latch arms 34 and 35 which extendupwardly therefrom in slightly diverging relationship and terminateshort of the wings 2| and 22 by an amount equal .110 the thickness ofthe support to be engaged.

The latch arms 34 and 35 are positioned between the arms I9 and 29 andare adapted to engage the underside of a support as shown in Fig. 6.

The assembly of the device of this invention with a coil and theinstallation of the assembly in a support is very simply accomplishedmerely by inserting the coil in the U-shaped member it and theninserting the U-shaped member ID in an apertured support until the latcharms 33 and 35 snap outwardly into engagement with the lower face of thesupport. This flexes the wings 21 and 22 upwardly an amount depending onthe thickness of the support and securely anchors the clip in thesupport so that it will not wobble or move around. Rotation of the clipis prevented by the key 24 which is positioned in an opening .25 of thesupport. Rotation and accidental dislodgment of the coil from the clipis prevented by the gripping action of the portions .26 and 21 and theprojections 30 and 3|. Accidental rotation of the adjusting screw isprevented by the tensioning action of the curved.

portions 32 and 33 of the arms [9 and 29.

It will thus be seen that the present invention provides an improvedsnap-in clip for coils and the like wherein the coil is securely heldagainst rotation or accidental dislodgment and the adjusting screw istensioned against accidental rotation. Although illustrated anddescribed with particular reference to its use as a mount or holder foran oscillator coil of a television set it 4 will be realized that theclip of this invention may have a wider application to coils andarticles of a similar nature.

Various modifications of the invention described and illustrated willmost likely occur to those skilled in the art to which the inventionrelates and may be made without departing from the spirit of theinvention, the scope of which is indicated in the attached claims.

I claim:

1. A snap-in clip for attaching a coil to an aperturecl supportcomprising: a base portion having a central opening and screw threadengaging means for engaging a bolt which may be disposed to extendthrough said opening; oppositely positioned arms extending upwardly fromopposite side edges of said base portion, said arms including portionsat their outer ends for engaging a coil form which may be disposedtherebetween and inwardly curving portions adjacent the base portionproviding opposed surfaces for frictionally engaging such a bolt atpoints axially spaced from said base portion; outwardly extendinglateral flanges extending from the outer ends of said arms to providesurfaces for engaging one face of such a support adjacent the aperturetherein; and oppositely disposed resilient latch arms extending fromsaid base portion intermediate said first-mentioned arms, said latcharms extending upwardly and outwardly to dispose the free ends thereofin engagement with an opposite face of such a support.

2. A snap-1n clip in accordance with claim 1 wherein the coil formengaging portions include pointed projections extending inwardly anddownwardly therefrom and adapted to bite into the side wall of a coilform to prevent rotation or accidental dislodgment of said coil form.

WILMER. H. CHURCHILL.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,987,035 Tid'eman Jan. 8, 19352,108,398 Allen Feb. 15, 1938 2,230,923 Barry Feb. 4, 1941 2,326,903Tinnerman Aug, 1'7, 1943 2,356,934 Ketchum Aug. 29, 1944 2,386,732Wohlhieter Oct. 9, 1945

